B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
252/53.A
B01J 21/00 (2006.01) B01J 23/40 (2006.01) B01J 23/42 (2006.01) B01J 23/54 (2006.01) B22F 9/20 (2006.01) H01M 4/92 (2006.01) H01M 4/86 (2006.01)
Patent
CA 1123417
NOBLE METAL-REFRACTORY METAL ALLOYS AND METHOD FOR MAKING ABSTRACT OF THE DISCLOSURE Finely divided noble metal-refractory metal alloys and methods for making them are disclosed. As catalysts these alloys have greater activity than a catalyst of the same unalloyed noble metal and may be advantageously used as electrodes for fuel cells particularly when supported. The method for making supported catalysts involves a simple and inexpensive procedure for converting a supported, finely divided noble metal catalyst to the desired alloy. In a preferred embodiment the process includes intimately con- tacting the supported noble metal catalyst with a finely divided refractory metal oxide, the metallic component of which is capable of enhancing the activity of the catalyst when alloyed therewith, and then heating to a sufficiently high temperature, preferably in a reducing atmosphere, to reduce the oxide and simultaneously form a finely divided, supported alloy of the noble metal and the metallic com- ponent of the oxide.
329946
Jalan Vinod M.
Landsman Douglas A.
Swabey Ogilvy Renault
United Technologies Corporation
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